{"id":"CVE-2023-7340","title":"Wazuh authd service (os_auth) Heap-based Buffer Overflow","summary":"Wazuh authd contains a heap-buffer overflow vulnerability that allows attackers to cause memory corruption and malformed heap data by sending specially crafted input. Attackers can exploit this vulnerability to trigger a denial of servic…","severity":"low","cvss":3.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Wazuh","product":"os_auth","affected":["os_auth >= 3.5.0 <= 4.3.10"],"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-03-27T16:55:39.979053Z"},"exploitAvailable":true,"published":"2026-03-27","updated":"2026-11-08","sourceUpdated":"2026-11-08T13:59:48.135Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-7340","references":[{"url":"https://github.com/wazuh/wazuh/security/advisories/GHSA-grjq-p5fg-m24r","label":"GitHub Security Advisory (GHSA-grjq-p5fg-m24r)"},{"url":"https://www.vulncheck.com/advisories/heap-buffer-overflow-in-wazuh-authd"}],"tags":["cve.org","exploit-available"],"epss":0.00329,"epssPercentile":0.26189,"ingestedAt":"2026-11-08T14:51:22.490Z","slug":"CVE-2023-7340","body":"## Overview\n\nWazuh authd contains a heap-buffer overflow vulnerability that allows attackers to cause memory corruption and malformed heap data by sending specially crafted input. Attackers can exploit this vulnerability to trigger a denial of service condition, resulting in low availability impact to the authentication daemon.\n\n## Affected\n\n- `os_auth >= 3.5.0 <= 4.3.10`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":31,"depthScoreParts":{"impact":19.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}